US Patent Application 18317927. NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY simplified abstract

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NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Organization Name

PRIME PLANET ENERGY & SOLUTIONS, INC.

Inventor(s)

Yurika Kojima of Kobe-shi (JP)

Yuki Morikawa of Kobe-shi (JP)

Naoto Onodera of Kobe-shi (JP)

Kouhei Tsuzuki of Kobe-shi (JP)

Hideki Sano of Ikeda-shi (JP)

NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18317927 titled 'NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Simplified Explanation

The patent application describes a negative electrode for a nonaqueous electrolyte secondary battery.

  • The negative electrode includes a current collector and a negative electrode active material layer.
  • The negative electrode active material layer contains graphite particles and Si-containing particles.
  • The binder used in the negative electrode active material layer includes carboxymethyl cellulose (CMC), poly acrylic acid (PAA), and styrene butadiene rubber (SBR).
  • The negative electrode has a spring constant in the thickness direction between 70 kN/mm and 400 kN/mm.
  • The yield loop height on a stiffness test for the negative electrode is equal to or less than 13 mm.


Original Abstract Submitted

The herein disclosed negative electrode is a negative electrode for a nonaqueous electrolyte secondary battery that includes a current collector, and a negative electrode active material layer disposed on a single surface or both surfaces of the current collector. The negative electrode active material layer includes a negative electrode active material and a binder. A graphite particle and a Si-containing particle are included as the negative electrode active material. A carboxymethyl cellulose (CMC), a poly acrylic acid (PAA), and a styrene butadiene rubber (SBR) are included as the binder. A spring constant in a thickness direction of the negative electrode is equal to or more than 70 kN/mm and not more than 400 kN/mm, and a yield loop height on a stiffness test is equal to or less than 13 mm.

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